forked from lthn/blockchain
06e7780df5
adds this to the bottom of whats there: // Copyright (c) 2017-2025 Lethean (https://lt.hn) // // Licensed under the European Union Public Licence (EUPL) version 1.2. // You may obtain a copy of the licence at: // // https://joinup.ec.europa.eu/software/page/eupl/licence-eupl // // The EUPL is a copyleft licence that is compatible with the MIT/X11 // licence used by the original projects; the MIT terms are therefore // considered “grandfathered” under the EUPL for this code. // // SPDX‑License‑Identifier: EUPL-1.2 //
65 lines
No EOL
2.2 KiB
C++
65 lines
No EOL
2.2 KiB
C++
// Copyright (c) 2014-2018 Zano Project
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// Copyright (c) 2014-2018 The Louisdor Project
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// Copyright (c) 2012-2013 The Boolberry developers
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// Copyright (c) 2017-2025 Lethean (https://lt.hn)
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//
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// Licensed under the European Union Public Licence (EUPL) version 1.2.
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// You may obtain a copy of the licence at:
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//
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// https://joinup.ec.europa.eu/software/page/eupl/licence-eupl
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//
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// The EUPL is a copyleft licence that is compatible with the MIT/X11
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// licence used by the original projects; the MIT terms are therefore
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// considered “grandfathered” under the EUPL for this code.
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//
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// SPDX‑License‑Identifier: EUPL-1.2
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//
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#pragma once
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#ifndef ENV32BIT
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#define CACHE_SIZE uint64_t(uint64_t(1UL * 128UL) * 1024UL * 1024UL * 1024UL)
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#else
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#define CACHE_SIZE (1 * 1024UL * 1024UL * 1024UL)
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#endif
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namespace tools
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{
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namespace db
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{
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typedef size_t container_handle;
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const uint64_t invalid_tx_id = 0;
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struct i_db_callback
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{
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virtual bool on_enum_item(uint64_t i, const void* pkey, uint64_t ks, const void* pval, uint64_t vs) = 0;
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};
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struct stat_info
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{
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uint64_t tx_count;
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uint64_t write_tx_count;
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uint64_t map_size;
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};
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struct i_db_backend
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{
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virtual bool close()=0;
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virtual bool begin_transaction(bool read_only = false) = 0;
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virtual bool commit_transaction()=0;
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virtual void abort_transaction()=0;
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virtual bool open(const std::string& path, uint64_t cache_sz = CACHE_SIZE) = 0;
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virtual bool open_container(const std::string& name, container_handle& h)=0;
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virtual bool close_container(container_handle& h) = 0;
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virtual bool erase(container_handle h, const char* k, size_t s) = 0;
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virtual uint64_t size(container_handle h) = 0;
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virtual bool get(container_handle h, const char* k, size_t s, std::string& res_buff) = 0;
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virtual bool set(container_handle h, const char* k, size_t s, const char* v, size_t vs) = 0;
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virtual bool clear(container_handle h) = 0;
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virtual bool enumerate(container_handle h, i_db_callback* pcb)=0;
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virtual bool get_stat_info(stat_info& si) = 0;
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virtual const char* name()=0;
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virtual ~i_db_backend(){};
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};
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}
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} |